Here is a list of all 32 original Captain Scarlet episodes, with a short synopsis for each of them.

The Mysterons - "We
can only hear them over our radios, but I've got a feeling they're with us all the time." Mars - 2068 AD: a mission
to the red planet ends in disaster as the crew make an unprovoked attack on the complex of the Mysterons. Sentient computers
left behind by the dying Mysteron race announce that they will destroy all life on Earth in a slow but effective war of nerves.
Their first act of retaliation will be the assassination of the World President...

Winged Assassin - "There's
some sort of trouble with Delta Tango one niner. They won't open the doors." The Mysterons threaten the life of
the Director General of the United Asian Republic and Spectrum swings into action to protect him as he prepares to board his
private plane at London Airport. But the Mysterons have sabotaged a DT19 passenger jet and used retrometabolism to recreate
it - under their control!

Big Ben Strikes Again - "Now let's assume Macey counted correctly and heard Big Ben strike thirteen. What's the only explanation?"
The Mysterons threaten to destroy London and a truck carrying an atomic device goes missing in the city. The only clue to
its whereabouts is the truck driver, found unconscious in the street. He claims that before he was struck down he distinctly
heard Big Ben strike thirteen...

Manhunt - "The
tables are turned. The manhunt for Captain Black is on!" The Mysterons make their first mistake when Captain Black, revealed
to have become a Mysteron agent, breaks into the Culver Atomic Centre and is exposed to radioactivity that will enable Spectrum
to track him with directional geiger counters. But as the net closes, Black kidnaps Symphony Angel and holds her hostage...

Avalanche - "Believe
me, before this day is out you'll need all the help you can get." When the Mysterons threaten to destroy key links
in the Frost Line Outer Space Defence System, Scarlet and Green investigate the mysterious deaths of the personnel at Red
Deer Base. The pair are baffled: radiation and toxicity levels read negative and there appears to be no reason for the deaths
of the men...

White as Snow - "Sir,
I don't think you appreciate that the man is dead.""That's no excuse!" The Mysterons threaten to kill Colonel
White and after their initial attempt fails, White elects to leave Cloudbase so as not to place the other Spectrum agents
in jeopardy. He goes into hiding on the USS Panther II submarine, unaware that his steward is a Mysteron agent...

The Trap - "Tomorrow
morning, on the stroke of ten, the entire supreme command of the World Air Force will be wiped out - here in this room!"Following the latest Mysteron threat, Scarlet is dispatched to supervise security at the International Air Conference
at Glen Garry Castle. Discovering a plot to gun down the delegates, he is captured and thrown in the castle dungeons...

Operation Time - "That
Magnus should keep his hands out of the way."The Mysterons' cryptic threat to "kill time" has the Spectrum personnel
stumped until Magenta realises that their target is General Tiempo, the Commander of Western Region World Defence. Tiempo
is due to have an operation which involves a new Cerebral Pulsator, but his neurosurgeon Dr. Magnus has already become a Mysteron
agent!

Spectrum Strikes Back - "You will never solve the mystery of the Mysterons." At a secret conference in a hidden Spectrum
base housed beneath the hunting lodge of a private African game reserve, Dr. Giadello announces the development of two devices
that will turn the tide for Spectrum in their struggle with the Mysterons. But the Mysterons intend to sabotage the conference
from within...

Special Assignment - "A Spectrum officer is outside the ranch. If you are with us... kill him!" The Mysterons threaten
to obliterate North America, but Spectrum is left without its number one agent when Scarlet is dismissed for gambling offences.
He is approached by a pair of Mysteron agents who intend to destroy Nuclear City using an SPV supplied by Scarlet, but first
he must prove his loyalty by killing Blue!

The Heart of New York - "I think I know how to make the Mysterons work for us." As the Mysterons threaten to destroy
the "Heart of New York", Scarlet and Blue investigate the theft of Grade A Security documents from the Spectrum security vaults.
The trio of thieves learn of Spectrumıs war with the Mysterons and decide to fake their own deaths to effect a daring robbery...

Lunarville 7 - "They
are trapped in Lunarville 7. We will deal with them at our leisure." When the Lunar Controller announces the Moon's
independence from Earth in the war of nerves with the Mysterons, Scarlet, Blue and Green journey to Lunarville 7 to investigate
reports of an unauthorised complex under construction in the Humboldt Sea. They discover more than they bargained for...

Point 783 - "D'you
mean to tell me that it was Major Brooks himself who exploded?" When the Mysterons threaten the life of the Supreme
Commander of Earth Forces, Scarlet and Blue are assigned to escort him to SHEF HQ in New York to chair a briefing on the Unitron,
an advanced unmanned tank. But the Commander's aides, Major Brooks and Colonel Storm, are killed in a car crash and both become
Mysteron agents...

Model Spy - "This
is an official meeting, not the Follies Bergeres!"The Mysterons target fashion designer Andre Verdain, secret controller
of the European Area Intelligence Service. Suspecting that the attempt on Verdain's life will be made at a fashion show in
Monte Carlo, Colonel White assigns Destiny and Symphony Angels to go under cover - as fashion models!

Seek and Destroy - "Look
- Angels! The girls have come to escort us!"When the Mysterons threaten to kill one of the Angels, Scarlet and Blue
are sent to Paris to escort Destiny back to Cloudbase. But Captain Black engineers the destruction of three newly-built Angel
aircraft - Mysteronised, the Interceptors are set to target Destiny!

Traitor - "We've
heard you've had a little trouble at the base recently.""That's no excuse!" After the inexplicable malfunction
of a hovercraft at the Spectrum cadet school at Koala Base, Scarlet and Blue investigate the possibility of sabotage from
within. The Mysterons have warned of a traitor in the Spectrum organisation and soon Scarlet has become the prime suspect!

Renegade Rocket - "Remember,
time is against us. Every second takes that rocket nearer its target." The Mysterons engineer the launch of a Variable
Geometry Rocket from Base Concord and their agent, Major Reeves, escapes with the destruct mechanism and target information.
While the Angels are despatched to track down Reeves, Scarlet and Blue are sent to Base Concord where they learn that the
rocket's target is the base itself!

Crater 101 - "If
we ever get out of this, Lieutenant, I'll buy you all the coconuts you can eat." Scarlet, Blue and Green volunteer
for a dangerous mission to remove the power source of the Mysteron complex in Crater 101 before it is destroyed by a low yield
atomic device. Travelling to the Moon, they enter the strange complex, unaware that a Mysteron agent has set the atomic device
to detonate early!

Shadow of Fear - "Gentlemen,
we're about to obtain the best close up shots of Mars ever taken by man." Astronomers at K14 Observatory are monitoring
signals from a hidden satellite that has made a successful landing on the Martian moon Phobos. The satellite will transmit
close up pictures of Mars back to Earth, but the project is sabotaged when one of the astronomers becomes a Mysteron agent...

Dangerous Rendezvous - "Let's hope the Mysterons listen to reason when you talk to them." Using the Mysteron pulsator recovered
from the complex in Crater 101, Dr Kurnitz has developed a transmission device with which Colonel White attempts to contact
the Mysterons and sue for peace. The Mysterons arrange a rendezvous in Greenland for peace talks, but Scarlet suspects a trap...

Fire at Rig 15 - "Don't
worry. He's too old a hand to get near an explosion. He'll be alright." When the Mysterons threaten to immobilise
the whole of Spectrum, Scarlet and Blue are sent to the Spectrum oil refinery at Bensheba. Mysteron tampering turns Rig 15
into an inferno and fire control expert Jason Smith becomes a target for the Mysterons' powers of retrometabolism...

Treble Cross - "I'd
say Major Gravener was a lucky man - a very lucky man." Captain Black engineers the death of chief test pilot Major Gravener,
who is retrometabolised as a Mysteron agent as part of the Mysterons' plan to destroy the World Capital, Futura City. But
a pair of doctors manage to resuscitate the real Major Gravener and Spectrum realises that he can impersonate his Mysteron
double!

Flight 104 - "This
whole thing gets stranger every minute. We might be on to something big." When the Mysterons threaten to sabotage a vital
conference at Lake Toma in Switzerland, Scarlet and Blue are assigned to escort the world's leading astrophysicist, Dr. Conrad,
to Geneva. The trio board their plane at Novena Airport, unaware that Flight 104 to Geneva is under Mysteron control...

Place of Angels - "This
bacillus is a totally new strain. The human body has no defence against it." Mysteron agent Judith Chapman steals
a phial of deadly K14 virus - enough to kill ten million people - from Biological Research Station D near Manchester. Scarlet
and Blue trail Chapman to New York, realising that she intends to carry out the Mysterons' threat to destroy the Place of
the Angels!

Noose of Ice - "We're
pretty isolated, but we don't leave anything to chance. The Mysterons won't succeed here." Tritonium alloy mining
operations at Hotspot Tower in the North Pole are threatened when a Mysteron agent cuts the power to vital heating elements.
Scarlet and Blue realise that with the heating elements down, the ice cap that surrounds the base will crush it in less than
30 minutes!

Expo 2068 - "Sorry
to break my appointment, Doctor, but there's been a little change in plan..." A lorry carrying an atomic core reactor
to the new Manicougan power complex falls into the hands of the Mysterons who intend to strike the Atlantic Seaboard of North
America. Spectrum begins a search for the missing lorry but Captain Black sends Scarlet and Blue on a wild goose chase...

The Launching - "I
get threatened every day of the week - phone calls, letters... If I took any of them seriously, I'd never get any work done!"
When the Mysterons threaten to destroy President Roberts within twelve hours, Scarlet is assigned as bodyguard to the sceptical
President. But when 11 hours pass without incident, Scarlet begins to suspect that he is guarding the wrong target!

Codename Europa - "This
Mysteron agent is one of the most dangerous we have ever faced." The Mysterons threaten to destroy the Triumvirate
of Europe, the three most powerful men on Earth after the World President. The three are sent to separate maximum security
installations, but Mysteronised electronics expert Professor Carney is determined to assassinate each in turn!

Inferno - "There's
something strange going on, sir. He just seemed to cut off." The Mysterons threaten to destroy the de-salination
plant at Najama in the Andes, so Scarlet and Blue are sent to observe the plant from an Aztec temple that overlooks it. But
a Mysteronised SKR4 recovery craft packed with high explosives is hurtling towards Earth with the temple as its target!

Flight to Atlantica - "What a bang! Can we do that again?" When the Mysterons threaten to destroy the World Navy Complex
at Atlantica, Blue and Ochre fly a V17 Air Force bomber to destroy a wreck that has been sighted drifting towards the base.
But the pair have been drugged by tainted champagne and passed false orders by Captain Black...

Attack on Cloudbase - "You don't understand, Colonel. He's really dead - permanent, final, absolutely dead!" After
the Mysterons threaten Spectrum's Cloudbase headquarters, a large fast-moving trace appears on the radar. When Rhapsody is
dispatched to check it out, her Interceptor is shot out of the sky and she is killed instantly. There is only one explanation:
the Mysterons themselves have come to Earth!

The Inquisition - "All
you have to do is prove who you are." A drugged Captain Blue awakes to find himself under interrogation on Cloudbase.
He has apparently been missing for three months and must now prove his identity to Intelligence agent Colgan by revealing
Spectrum's top secret cypher codes. But Blue has his own ideas about how to prove who he is without breaching security...